"At the time of Jesus, and in rural areas like Galilee, a young couple might well cohabit before the contract was signed 'in order to get acquainted'.
The betrothal was held to be enough of a marriage that a divorce would be needed if the couple split up between betrothal and contract." New Testament scholar N. Wright asserts that Paul absolutely forbade fornication, irrespective of a new Christian's former cultural practices.
Augustine considered fornication to have two definitions: the first was "cleaving to a prostitute" and the second, broader and more precise one was "what men who do not have wives do with women who do not have husbands".
An historical example is the medieval English monastic, John Baconthorpe.
A more contemporary example is the modern-day theologian Lee Gatiss who argues that premarital sex is immoral based on scripture.
It is no slight boon that in wedlock fornication and unchastity are checked and eliminated.
This in itself is so great a good that it alone should be enough to induce men to marry forthwith, and for many reasons...
One theory therefore suggests that it is these behaviours, and only these, that are intended by Paul's prohibition in chapter seven.
He states that "the word "fornication" has gone out of fashion and is not in common use to describe non-marital sex. but the overwhelming weight of scholarship and all the available evidence from the ancient world points firmly in this direction.The significance of sexual acts to which the term is applied varies between religions, societies and cultures.In modern usage, the term is often replaced with a value judgment term like extramarital sex.Elsewhere in First Corinthians, incest, homosexual intercourse (according to some interpretations) and prostitution are all explicitly forbidden by name.Paul is preaching about activities based on sexual prohibitions laid out in Leviticus in the context of achieving holiness.The First Epistle to the Corinthians states "Flee from sexual immorality" and lists adulterers and "those who are sexually immoral"/practicing-fornicators in a list of "wrongdoers who... The Apostolic Decree of the Council of Jerusalem also includes a prohibition of fornication.